Seems like I am only one here who is not using themes. But now I will give it a try.

No themes, not rooted, stock launcher.

My wallpaper(s) are from my DSLR photos, I have ripped a bunch of song clips to use as ring tones, I choose what apps are on my home screens.
Textra for sms, FireFox for web browsing, stock email since I don't do much email on the phone.

I've really fallen off on customization. I use to organize my apps and background to match and it would look amazing in my opinion. I've gotten really lazy these days and it starts looking sloppy on my screen.